How to Improve Nuclear Fusion? With a LASER PUNCH.Brian Barrett4/02/10 8:00pm38EditPromoteDismissUndismissHideGo to permalinkNuclear fusion is a tricky business: the last thing you want is any of the residual radioactive isotopes leaking out from the reactor. So how might California's National Ignition Facility mitigate that possibility? By laser punching. Obviously.